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FAMILY VII.—GRYLLIDjE.

at an angle of about forty-five degrees with the body; thenholding them in such a position that the scraper of one restsupon the file of the other, he moves the tegmina back andforth laterally, so that the file and scraper rasp upon eachother. This throws the tegmina into vibration, and pro-duces the call.

Crickets, and especially the House Crickets, may readilybe destroyed by taking advantage of their liking lor sweetliquids, and any vessel containing beer or other fluidsplaced about will usually collect and drown large numbersof these insects. They can also be killed by distributing un-cooked vegetables, as ground-up carrots or potatoes, whichare strongly poisoned with arsenic. Of course great caremust be exercised in the use of any poison in and aboutdwellings.

The sub family CEcanthinse is represented by a singlegenus.

GENUS CEcanthus Serville.

Thorax elongated, narrow, sides deflexed, anterior por-tion somewhat narrower than the posterior portion. An-tennae about twice as long as the body. Hind legs long andslender, with weak spines on the tibiae. Wings of femalewrapped around the body. Wing-covers of male flattened,transparent, much firmer and broadly spread out, causingsuch a difference of appearance between the two sexes thatcollectors consider them frequently widely different species.

The members of this genus are well known insects, usu-ally called “tree-crickets.” They are delicate yellowish-green or greenish-white insects found abundantly aboutlow bushes and tall plants. Thev are strictly arboreal.About the time that our golden-rods are in full bloomthese insects can be found upon almost any of these plants,and usually in pairs. They remain almost motionlessin such places during the day, but become very activeduring the night. Though belonging to plant-feed-